Lamp-shade holder.



G..H. BISSELL.

LAMP SHADE HOLDER. APPLICATION FILED MAY 20, 1913.

1,1 15,050. Patented Oct. 27, 1914.

WITNESSES.- INVENTOR.

UNITED STATES A'rEi orFioE.

CARL H. BISSELL, OF SYRACUSE, NEW YORK, ASSIGNOR T0 CROUSE-HINDS COMPANY. OF SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

LAMP-SHADE HOLDER.

Specification of Letters Patent.

Patented Oct. 27, 1914.

To all whom it may concern:

Be it known that I, Cari. H. BISSELL, of Syracuse, in the county of Onondaga and State of New York, have invented a certain new and useful Lamp-Shade Holder, of which the following is a specification. This invention has for its object the production of-an incandescent electric lamp fixture and particularly of a fixture having a simple, efficient and inconspicuous lamp shade holder, and the invention consists in the combinations and constructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanying drawings in which likecharacters designate corresponding parts in all the views.

I igure 1 is an elevation, partlybroken away, of this fixture, the spring aws of the shade holder being shown in their closed position. Fig. 2 is a vertical sectional view bf the fixture showing the position of the jaws when in their open position, the lamp socket being shown in elevation. Fig. 31s an end view, looking upwardly in Figs. 1 and 2, the lamp socket and shade being removed. F ig. 4 is a detail View, partly in section, of the clamping nut.

The lamp shade holder is here shown as embodied in a fixture including a cup shaped casing which supports the lamp socket and the shade holder, and the shade holder usually consists of spring arms having conically curved surfaces, these spring arms being clamped into. position on the shade by a clamping member as a nut encirclmg the arms.

1 is the casing which is here shown as cup or hell shaped. the casing having an internallv threaded nipple 2 at its upper end for connection with a conduit as 3 inclosing the S131\1L9 wires and being open at its lower end. The casing also formed with a bot tom in the form of an annular llange 1 atthe base of the nipple 2.

5 designates the series of spring arms or jaws located within the casing 1. this series of jaws having an externally threaded conoidal surface (3. the base portion or portion of larger diameter being located nearer the free or engaging ends 7 of the jaws than the upper portion of less dian'ieter.

These springjaws 5 are preferably formed in a cup shaped shell 8 raving its bottom 9 inturned and "ngagmg the bottom 4 of the casing 1, the shell 8 being split longitudinally from its open end toward its bottom to form the sprin arms 5. The lower or free end:-. 7 of tie jaws engage the shade 10. e0 11 is the clamping element as a nut havmg an internally threaded conoidal surface 12 complemental to the surface 6 of the series of clamping jaws 5. The not is preferably formed up out of sheet metal and 1s provided with an annular chamber 13 opening through its upper end for receiving the lower edge 14 of the casing 1.

15 is the lamp socket for receiving the incandescent electric lamp 16, the socket 15 having its base 17 mounted on the bottom 9 of the shell 8 so that the jaws 5 inclese' the socket 15. The spring jaws 5 are socured to the bottom 4 of the casing by any suitable means as rivets 18 passing through the bottom' 9 of the shell 8 and the bottom 4 of the casing 1, and the lamp socket is secured in position in any suitable manner as by screws which thread into openings 19 in the bottoms 1 and 9. I 1 so In operation as the nut 11 is screwed up wardly the jaws 5 will expand permitting the insertion of the lamp shade 10 and upon the downward movement of the nut. the jaws 5 are contracted on the lamp shade. 55 This fixture and lamp shade holder presents a neat appearance and is particularly adapted to places where there is vibration as in railway cars.

lVhat I claim is: 9

1. A lamp shade holder comprising resilient spring jaws for engaging the lamp shade. the jaws having conically curved threaded surfaces, and a clamping nut having compleinental conical threaded surfaces for coacting with the threaded surfaces of the jaws, substantially as and for the purpose described.

2. A lamp shade holder comprising a circular series of spring jaws for engaging the lamp shade. the series of jaws having a conoidal threaded surface. and a clamping nut having a complemental internally threaded conoidal surface for engaging the threaded surface of saidseries of jaws. substantially as and for the purpose specified.

3. A lamp shade holder comprising a circular series of spring jaws for engaging the lamp shade. the series of jaws having an externally threaded conoidal surface having its portlon of greatest diameter located nearer the free ends of the jaws than its ,plemental to the threaded surface of the series of jaws, substantially as and for the purpose described.

5. The combination of an electric lamp socket, and a shade holder comprising a series of spring jaws encircling the lamp socket and having a conoidal threaded surface, and a clamping nut turning on the threaded surface of said jaws, substantially as and for the purpose set forth.

6. The combination of a supporting casing open at one end, a lamp shade holder com prising aseries of spring jaws extending into the casing, the series of jaws being provided with external threads, and a clamping nut having internal threads complemental to those of the spring jaws, the clamping nut being formed with an annular chamber re-.v ceiving the margin of the wall of the casing at the open end thereof, substantially as and for the purpose set forth.

7. The combination of a cup shaped casing open at one end, a lamp shade holder in the form of a shell having its bottom mounted on the bottom of the cup shaped casing, the shell being split longitudinally at a plurality of points forming spring jaws for engaging the shade, a clamping element en circling the series of jaws and having an annular chamber for-receiving the edge of the cup shaped casing at the open end thereof, and an incandescent lamp socket within the holder and arranged with its base mounted on the bottom of the shade holder, substantially as and for the purpose described.

In testimony whereof I have hereunto signed my name in the presence of two attesting witnesses, at Syracuse, in the county of (inondag'a, in the State of New York this 13th day of May, 1913.

CARL H. BISSELL.

Witnesses:

C. C. Sononnnon, WM. CONNELL BLANDING, 

